Question:
A step up transformer has turn ratio \(10:1\). A cell of emf \(2\,V\) is fed to the primary, then the secondary voltage developed is:
A step up transformer has turn ratio \(10:1\). A cell of emf \(2\,V\) is fed to the primary, then the secondary voltage developed is:
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DC input \(\Rightarrow\) transformer does not work.
Updated On: Apr 16, 2026
- \(20\,V\)
- \(10\,V\)
- \(2\,V\)
- zero
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The Correct Option is D
Solution and Explanation
Concept:
Transformer works only with alternating current (AC), not direct current (DC).
Step 1: Given input.
A cell provides DC.
Step 2: Working principle.
Transformer requires changing magnetic flux.
Step 3: Conclusion.
No changing flux \(\Rightarrow\) no induced emf. \[ \therefore V_s = 0 \]
Step 1: Given input.
A cell provides DC.
Step 2: Working principle.
Transformer requires changing magnetic flux.
Step 3: Conclusion.
No changing flux \(\Rightarrow\) no induced emf. \[ \therefore V_s = 0 \]
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